Door-holder.



PATENTED SEPT. 11, 1906.

s. B. DUTRO.

DOOR HOLDER. APPLICATION FILED NOV. 14, 1905.

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SAMUEL B. DUTRO, OF MASON CITY, IOXVA.

DOOR-HOLDER. I

Specification of Letters Patent.

Patented Sept. 11, 1906.

Application filed November 14.1905. Serial No. 287,871.

highly useful device of this character by which a door, blind, or thelike .may be supported in position to permit one of its edges to beplaned or fitted with hinges.

The invention consists of the construction, combination, and arrangementof parts hereinafter fully described, claimed, and illustrated in theaccompanying drawings, wheresition the opposing or clamping faces 4 ofthe Figure 1 is a view in side elevation of a clamp constructed inaccordance with my invention, and Fig. 2 is a sectional view on the line2 2' of Fig. 1 looking in the direction indicated by the arrows.

The clamp comprises aws 1 1, which are duplicates in construction andwhich are adapted to be constructed from wood, metal, or any othersuitable material. The jaws are disposed in longitudinal relation toeach other and are so connected that their opposing or clamping facesautomatically move toward or away from each other by the application orremoval of a device to the clamp. The clamp is mounted upon feet orrests 2, which are situated at the outer ends of the jaws 1 1 and whichare provided with pads 3. The pads frictionally engage the floor orother support and prevent the clamp from moving while working upon anarticle supported thereby. The opposing or clamping faces 4 of the jawsare provided at points near their lower extremities with shoulders oroffsets 5. The edge of a door or other object is placed upon theshoulders or offsets 5, and the weight thereof causes the opposing orclamping faces of the jaws to approach each other and firmly clamp theobject between the jaws. The jaws automatically open when the weight ofthe object is removed from the shoulders or offsets 5 and are held inthis position to permit the ready application or removal of an object toor from the clamp. To cause the aws to automatically open, a spring 6 isarranged upon their under edges and is secured in position by having itsends attached to the under faces of the jaws at points removed fromtheir opposing or clamping faces. The spring is prevented from saggingdownwardly, and thus forming an obstruction, by means of eyes 7, whichare secured to the under faces of the jaws and through which the springis passed.

The jaws are connected together to permit their opposing or clampingfaces to automatically move toward and away from each other and topermit them to be relatively adj usted by means of clamps or members 8and 8. The members 8 are provided with longitudinally-disposed dovetailslots 10 to adjustably receive the dovetail portions 11 of the members8. The opposite ends of the members are curved upwardly and pivotallyconnected to the aws 1 1 at 9. It is appar cut that the membcrsmay beadjusted to pojaws 1 1 at such distances apart as to adapt the clamp forthe reception of objects of different thicknesses and that the membersso connect the jaws that they may be automatically closed and opened.Thumb-screws 12 are carried by the portions 11 to engage the inner wallsof, the slots 10 to retain the mem bers' and jaws in their adjustedpositions. The slotted members are provided with graduations 13 topermit the jaws to be adjusted accurately.

The operation of the device may be stated as follows: The jaws havingbeen adjusted properly, the object to be supported by the clamp isinserted between the opposing or clamping faces 4 and positioned uponthe shoulders or offsets 5. the object to the shoulders or offsets 5causes the jaws to approach each other and firmly clamp the object. Theobject may be removed from the clamp by simply moving the same upwardoff of the shoulders or offsets 5. hen the article has been removed fromthe shoulders or offsets 5, the spring causes the jaws to turn upon thepivots 9 and move their opposing or clamping faces 4 away from eachother, whereby another object may be applied to the clamp.

Having described my invention, What I claim is- 1. A clamp comprisingjaws, members pivotally secured to the jaws and adj ustably connected toeach other, and means for automatically opening the aws.

2. A clamp comprising jaws, a member pivotally connected to one of thejaws and provided with a longitudinally arranged slot, another memberpivotally connected to The application of IIO the otherj aw andadjustably mounted Within i and means for automatically opening the saidslot, means for securing the members in jaws. IO their relative adjustedposition, and means to In testimony whereof I afiix my signatureautomatically open the aWs. in presence of tWo Witnesses.

3. A clamp comprising jaws having their SAMUEL B. DUTRO. opposing orclamping faces provided With off- Witnesses: sets, members pivotallyconnected to the E. J. WILLIAMS,

jaws and adjustably connected to each other, JOE BARTA.

